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Open Access 01-12-2019 | Myocardial Infarction | Research article

Reduced regional flow in the left ventricle after anterior acute myocardial infarction: a case control study using 4D flow MRI

Authors: Philip A. Corrado, Jacob A. Macdonald, Christopher J. François, Niti R. Aggarwal, Jonathan W. Weinsaft, Oliver Wieben

Published in: BMC Medical Imaging | Issue 1/2019

Abstract

Background

Acute myocardial infarction (AMI) alters left ventricular (LV) hemodynamics, resulting in decreased global LV ejection fraction and global LV kinetic energy. We hypothesize that anterior AMI effects localized alterations in LV flow and developed a regional approach to analyze these local changes with 4D flow MRI.

Methods

4D flow cardiac magnetic resonance (CMR) data was compared between 12 anterior AMI patients (11 males; 66 ± 12yo; prospectively acquired in 2016–2017) and 19 healthy volunteers (10 males; 40 ± 16yo; retrospective from 2010 to 2011 study). The LV cavity was contoured on short axis cine steady-state free procession CMR and partitioned into three regions: base, mid-ventricle, and apex. 4D flow data was registered to the short axis segmentation. Peak systolic and diastolic through-plane flows were compared region-by-region between groups using linear models of flow with age, sex, and heart rate as covariates.

Results

Peak systolic flow was reduced in anterior AMI subjects compared to controls in the LV mid-ventricle (fitted reduction = 3.9 L/min; P = 0.01) and apex (fitted reduction = 1.4 L/min; P = 0.02). Peak diastolic flow was also lower in anterior AMI subjects compared to controls in the apex (fitted reduction = 2.4 L/min; P = 0.01).

Conclusions

A regional method to analyze 4D LV flow data was applied in anterior AMI patients and controls. Anterior AMI patients had reduced regional flow relative to controls.

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Title: Reduced regional flow in the left ventricle after anterior acute myocardial infarction: a case control study using 4D flow MRI
Authors: Philip A. Corrado
Jacob A. Macdonald
Christopher J. François
Niti R. Aggarwal
Jonathan W. Weinsaft
Oliver Wieben
Publication date: 01-12-2019
Publisher: BioMed Central
Keyword: Myocardial Infarction
Published in: BMC Medical Imaging / Issue 1/2019
Electronic ISSN: 1471-2342
DOI: https://doi.org/10.1186/s12880-019-0404-7

At a glance: The ONWARDS insulin icodec trials

Springer Medicine

Reduced regional flow in the left ventricle after anterior acute myocardial infarction: a case control study using 4D flow MRI

Abstract

Background

Methods

Results

Conclusions

At a glance: The ONWARDS insulin icodec trials

Springer Medicine

Abstract

Background

Methods

Results

Conclusions

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